Judging from the provided codes, their respective location on the engine harness and the mist/rain condition I would venture the idea of water intrusion into a harness bulkhead connector. Ford will typically mount them around the area where the steering shaft comes through and if not sealed or jacketed properly, perhaps even damaged, then moisture can wreak havoc with sensor communication to the ECU.

Might want to get in touch with corporate and see if there's any recalls or TSB's issued as the stealership won't likely volunteer any info that keeps your money out of their pockets.